The rules in Subchapter 7H are the state guidelines for areas of environmental concern (AECs) including introduction and general comments (.0100); the estuarine system (.0200); ocean hazard areas (.0300); public water supplies (.0400); natural and cultural resource areas (.0500); development standards (.0600); general permits for construction or maintenance of bulkheads and the placement of riprap for shoreline protection in estuarine and public trust waters (.1100); piers, docks and boat houses in estuarine and public trust waters (.1200); general permit to construct boat ramps along estuarine and public trust shorelines and into estuarine and public trust waters (.1300); groins in estuarine and public trust waters (.1400); excavation within or connecting to existing canals, channels, basins, or ditches in estuarine waters, public trust waters, and estuarine shoreline AECs (.1500); aerial and subaqueous utility lines with attendant structures in coastal wetlands, estuarine waters, public trust waters and estuarine shorelines (.1600); emergency work requiring a CAMA or a dredge and fill permit (.1700); beach bulldozing landward of the mean high-water mark in the ocean hazard AEC (.1800); temporary structures within the estuarine and ocean hazard AECs (.1900); authorizing minor modifications and repair to existing pier/mooring facilities in estuarine and public trust waters and ocean hazard areas (.2000); construction of sheetpile sill for shoreline protection in estuarine and public trust waters (.2100); construction of freestanding moorings in established waters and public trust areas (.2200); replacement of existing bridges and culverts in estuarine waters, estuarine shorelines, public trust areas and coastal wetlands (.2300); placement of riprap for wetland protection in estuarine and public trust waters (.2400); replacement of structures; the reconstruction of primary or frontal dune systems; and the maintenance excavation of existing canals, basins, channels, or ditches, damaged, destroyed, or filled in by hurricanes or tropical storms (.2500); construction of wetland, stream and buffer mitigation sites by the North Carolina Ecosystem Enhancement Program or the North Carolina Wetlands Restoration Program (.2600); and the construction of riprap sills for wetland enhancement in estuarine and public trust waters (.2700).